John Deere Motor Grader 772A Users Manual

MOTOR GRADER 772A 772A

772A to the manual 06fcac3e-b799-47d6-80da-55ac43e70a15

2015-02-03

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772A MOTOR GRADER
Model shown may include options
ENGINE PERFORMANCE FEATURES ADD VERSATILITY WITH:
w 651 460
::J
~597 440
0
I- 542 400
I-
!!;!466 360
TORQUE
150 SAE net hp (112 kW)
12-ft. (3.65 m) moldboard with 0.62 x 6 in. (16 x
152 mm) through-hardened Dura-MaX@cutting
edge; 13- and 14-ft. (3.95 and 4.25 m)
moldboards and 2-ft. (610 mm) extensions
available
Scarifier
Nm Ilb-ft Rear-mounted ripper
Snow plow and wings
Bulldozer
hp I kW
POWER 160 119 a:
w
140 104 ~
0
120 69 "-
I-
W
100 75 z
60 60
Power Shift transmission;
8 speeds forward, 4 reverse
Articulated frame steering
Automatic blade control
Ibl
g/kWhIhph
Differential lock-unlock
1000 1400 1600 2200
All-wheel drive, standard system to 6.7 mph
(10.8 km/h), optional system to 11.5 mph
(18.5 km/h), switch-controlled for two modes of
operation
22-ft. 6 in. (6.86 m) turning radius
-' 274
1
.45
~243 .40
LL 213 .35
FUEL CONSUMPTION
ENGINE SPEED-RPM All-hydraulic control of blade and machine
functions
Closed-center hydraulic system with
operational no-leak, drift-free poppet valves
Pushbutton control
Hydraulically controlled, 7-position lift arms let
you position blade for 90-degree bank cuts, left
or right, in approximately one minute, without
leaving the seat
Oscillating front axle and rear tandem
Hydraulic front-wheel lean
Rollover protective structure (ROPS) w/cab
69
772A MOTORGRADER SPECIFICATIONS
(Specifications and design subject to change without notice. Wherever applicable, specifications are in accordance with SAE Standards. Except where otherwise noted, these specifications
are based on a unit with 13.00-24, 12-PR, tubeless tires on 8 in. (254 mm) rims, 12-ft. (3.65 m) moldboard with 6-in. (152 mm) cutting edge, and standard equipment. Weights include
lubricants, coolants, full fuel tank and 175 lb. (79 kg) operator.)
Rated Power @2300 rpm: SAE
Net 150hp(112kW)
Gross.. .. .. .. .. .. .. .. .. .. . 160 hp (119 kW)
Net engine power is with standard equipment including air cleaner, exhaust system, alter-
nator, and cooling fan, at standard conditions per SAEJ1349 and DIN 70020, using No. 2-
D fuel @35 API gravity. No derating is required up to 10,000 ft. (3050 m) altitude. Gross
power is without coolingfan.
DIN 70 020
112kW
Engine: John Deere 6-466A
Type. . . . . . . . . 4-stroke cycle, turbocharged and intercooled diesel
Bore and stroke. . . . . . . . . . . . . . . .4.56 x 4.75 in. (116 x 121 mm)
No.ofcylinders 6
Displacement 466cu.in.(7.638L)
Compression ratio 14.9t01
Maximum net torque @1300 rpm . . . . . 4651b-ft (630 Nm) (64 kg-m)
Lubrication. . . . . . . . . . . . . . . . . . . Pressure system w/full-flow filter
Coolingfan Suctiontype
Aspiratedaircleanerw/restrictionindicator. . . . . . . . . . . . . . . . Dry
Electricalsystem. . . . . . . . . . . . . . . . . . 24 volt w/42 amp alternator
Batteries (two 12-volt) Reserve capacity: 360 minutes
Transmission. ...................Direct drive, full power shift
with planetary gear reductions. Foot inching pedal.
Travel Speeds (2200 engine rpm, no tire slip, 14.00-24tires):
Shift Lever Position Forward Reverse
mph km/h mph km/h
1 2.3 3.7 3.0 4.8
2 3.3 5.3 4.2 6.8
3 5.2 8.9 6.6 10.6
4 6.7 10.8 8.6 13.9
5 8.8 14.2
6 11.5 18.5
7 14.6 23.6
8 25.1 40.4
Differential Lock. . . . . . . . . . Foot-operated, hydraulically actuated
Rear Drive. . . . . . . . . . . . . . . . . . . .. Inboard planetary final drives
with heat-treated, splined steel torque shafts. Oscillating welded con-
struction tandems; nodular cast sprockets driving 2 in. (51 mm) pitch
roller chain in oil bath.
Front Drive. . . . . . . . Standard and optional systems are available
to match different applications. Both use a variable-displacement
pump, a reversible motor in each wheel, and a flow divider to assure
front wheel traction. System has two operational modes and free-
wheels at transport speeds or when not in use.
Standard system - effective in gears 1-4 . . 5.03 in3 (89 cm3) pump,
2.03 in3 (33 cm3) motors
High speed system - effective in gears 1-6 6.00 in3 (98 cm3) pump,
2.03 in3 (33 cm3) motors
Front Axle: Fabricated steel box frame with planetary drives
Totaloscillation 30deg.
Wheel lean (either direction) ...20deg.
Steering:
Front. . . . . . . . . . . . . . . . . . . Full hydraulic power system. Steering
capabilities without engine power
Rear. . . . . . . . . . . . . . . . .. Hydraulically articulated frame steering
(25 deg. left or right)
Minimumturningradius 22ft.6in.(6.86m)
Brakes:
Service Foot-operated,hydraulically
actuated, wet-disk, effective on 4 tandem wheels
Parking. . . . . . . . . . . . . . . . . . Foot-operated, mechanical, dry-disk,
effective on 4 tandem wheels
Hydraulic System:
Closed center w/pressure controlled 4.0 cu. in. (65 cm3) variable-dis-
placement pump. . . . . . . . . . 36 gpm (2.27 Us) @2200 engine rpm
Moldboard. . . . . . . . . . . . . . . . . . Wear-resistanthigh-carbon steel
Length 12ft.(3.66m)
Height 24in.(610mm)
Thickness 0.88in.(22mm)
Cutting Edge: Dura-MaX@through-hardened curved steel
Thickness and width. . . . . . . . . . . . . . . .0.62 x 6 in. (16 x 152 mm)
Blade Range:
Liftaboveground .17 in. (432 mm)
Blade side shift:
Right or left 26.9in.(683mm)
70
Shoulder reach outside wheels (frame straight):
Right 88.4in.(2.25m)
Left 89.6in.(2.28m)
Pitch at ground line 44deg.forward
10 deg. back
Blade Lift Mechanism:
Control Dual-lever,hydraulic
LiftArms: Nodular cast iron
Positions 7
Control Hydraulic,footoperated
Circle: Fabricated steel angle construction
Circle diameter 60in.(1.5m)
Rotation 360deg.
Drive. . . . . . . . . . . . . . . Hydraulic motor and worm gear w/positive
position lock
Sideshift,right 32.0in.(813mm)
left 33.5in.(851mm)
Drawbar . . Welded box section, 3.5 x 7 x 0.5 in. (89 x 178 x 13 mm)
wall wlball and socket draft connection
Frame:
Rear mainframe. . . . . . . . . . . . . . . . . . . . Welded box section from
articulation joint to mainframe arch
Width, minimum 12.03in.(306mm)
Height,minimum 11.95in.(304mm)
Thickness, sides 0.47in.(12mm)
top and bottom (min.) 0.87 in. (22 mm)
Weight per ft., minimum 120Ib.(179kg/m)
Minimum vertical section modulus. . . . . . . . . . . . . . . . . . . . 143 in3
(2343 cm3)
Front mainframe. . . . . . . . . . . . . . . . . . . . Welded box section from
mainframe arch to front hood
Width 10in.(254mm)
Height, minimum 13in.(330mm)
Thickness, minimum ... ... ...0.63in.(16mm)
Weightperft., minimum .110Ib.(164kg/m)
Minimum vertical section modulus 118in3
(1935 cm3)
Tires:
13.00-24, 12-PR, G2, standard
14.00-24, 12-PR, G2
17.5-25, 12-PR, L2
Dimensions:
Height to top of steering wheel. . . . . . . . . . . . . . . 7 ft. 6 in.(2.29 m)
Capacities: U.S. Liters
Fueltank 70gal. 265.0
Cooling system 7gal. 26.5
Engine lubrication,
includingfilter 20qt.
Transmission and
hydraulicsystem 41gal.
Tandem housings (each) 5 gal.
Worm gearbox 4qt.
Scarifier (Special Equipment):
V-type for 4 ft. (1.22 m)cut with 3 manual pitch positions
Number of teeth 5standard,90ptional
Lift above ground 24.0in.(610mm)
Penetration 13.7in.(348mm)
Shank size 1x3in.(25x76mm)
Ripper (Special Equipment): 8 ft. (2.44 m) cut width, parallelogram
linkage, 2 manual shank vertical positions
Numberofshankpockets 5
Number of shanks 3
Liftaboveground 14.5in.(368mm)
Penetration 14in.(356mm)
Shank size 2x5in.(51x127mm)
Lift above ground (shank in upper position) 23.5 in. (597 mm)
18.9
155.2
18.9
3.8
Tire Wheel Tread Width Ground Clearance
Size Front Rear Front Rear (Front Axle)
13.00-24 76.15 in. 79.61 in. 7ft. 9.5 in. 7ft. 10 in. 22 in.
8"rim (1.93m) (2.02m) (2.37m) (2.34m) (559 mm)
(203 mm)
14.00-24 76.15 in. 79.61 in. 7ft. 11.5 in. 8ft. 22.5 in.
10" rim (1.93m) (2.02m) (2.43m) (2.44 m) (572 mm)
(254 mm)
17.5-25 78.40 in. 82.37 in. 8 It. 5 in. 8ft. 6 in. 23.2 in.
14" rim (1.99m) (2.09 m) (2.57m) (2.59 m) (589 mm)
(356 mm)
772A MOTOR GRADER SPECIFICATIONS
Additional Standard Equipment:
Gauges: Horn
Air filter indicator Hourmeter
Engine oil pressure Lights, stop and tail
Front-wheel-drivereturn filter Lights, driving
indicator Precleaner
Front-wheel-drivecharge Reverse warning alarm
pressure ROPS cab w/seat belt, front wiper
Fuel level and dome light
Hydraulic function return filter Seat, cushioned vinyl
indicator Turn signals
Transmissionclutch pressure
Transmissionfilter indicator
Transmissionlube pressure
Transmissiontemperature
Water temperature
Optional or Special Equipment with Weights:
(Add these weights to SAE Standard Equipment operating weights
to obtain total operating weights.)
Accelerato r-dece Ierato r
Air conditioner w/heavy-duty
alternator
Automatic blade control
Articulation indicator
Batteries, heavy-duty
w/620-minute reserve capacity
Blade, front bulldozer
w/float control
Bottom guard, heavy-duty
w/rear hitch
Bottom guard, regular
Cold-weather starting aid
Dura-Max through-hardened
cutting edge, 3/4x 8 in. (19 x 203 mm)
Engine disconnect, cold weather
Engine side shields
Fan, defroster
Front wheel drive in 1st through 6th gears,
11.5 mph (19 km/h),
free wheeling in 7th and 8th
gears, 6 cu in. (98 cm3)
variable displacement pump
Heater, cab, 19,000 BTU (5.6 kW)
Heater, cab, 38,000 BTU (11.1 kW)
Heater, cab, 40,000 BTU (11.7 kW)
Heater coolant
Heater, roof-mounted, 25,000 BTU
(7.3 kW) (add to air conditioner)
Hydraulic pump, pressure controlled,
variable displacement, 6.0 cu. in.
(98 cm3), 52.4 gpm (3.3 Us)
Lights, blade
Lights, work, 2 fronU2 rear floods
Mat, floor
Mirror, outside rear view, convex, outside
Mirror, outside rear view, convex,
both sides
Mirror, outside rear view, flat, one side
Mirror, outside, rear view, flat, both sides
Moldboards: .
12-ft. (3.66 m) Wf3/4x 8 in
(19 x 203 mm) through-hardened
Dura-Max cutting edge
130ft. (3.96 m) w/5/ax 6 in.
(16 x 152 mm) through-hardened
Dura-Max cutting edge
13-ft. (3.96 m) wf3/4x 8 in.
(19 x 203 mm) through-hardened
Dura-Max cutting edge
140ft. (4.27 m) wfS/ax 6 in.
(16 x 152 mm) through-hardened
Dura-Max cutting edge
140ft. (4.27 m) Wf3/4x 8 in.
(19 x 203 mm) through-hardened
Dura-Max cutting edge
SAEOperating Weight
Standardequipment. . . .
On Front
Wheels
9237 lb.
(4190 kg)
10,548 lb.
(4784 kg)
9780 lb.
(4436 kg)
J
II
II
On Rear
Wheels
21,666 lb.
(9827 kg)
21,470 lb.
(9739 kg)
24,712 lb.
(11 209 kg)
Total
30,903lb.
(14017 kg)
32,018 lb.
(14523 kg)
34,492 lb.
(15645 kg)
Standard equipment
andscarifier.. .. .. .. .
Standard equipment,
scarifier and ripper. . . .
71
lb. kg
7 3
187 85
350 159
6 3
101 46
1618 734
459 208
160 73
3 1
8.5 Ib/ft (13 kg/m)
30 14
60 27
4 2
34 15
16 7
31 14
31 14
10.5
17 8
50 23
4 2
12 5
94
63
12 5
6 3
12 5
106 48
60 27
116 53
146 66
155 70
lb. kg
Moldboard extensions, 2-ft. (610 mm),
right or left (less cutting edge) 220 100
Moldboard float 14 6
Overlay end bits (1 pair), 6 in. (152 mm) 62 28
Overlay end bits (1 pair), 8 in. (203 mm) 77 35
Rear hitch 61 28
Rims:
10 in. (254 mm) for 14.00-24tires 452 205
14 in. (356 mm) for 17.50-25tires 645 293
Ripper, rear mounted with hitch 2474 1123
ROPS canopy w/seat belt and
instrument panel cover -447 -203
Scarifier, regular w/five teeth
1 x 3 in. (25 x 76 mm) 1115 506
Scarifier float 9 4
Seat belt, 3-in. (76 mm) 3 1
Seat, deluxe suspension, cloth
covered 111 50
Seat, deluxe suspension, vinyl
covered 58 26
Sound suppression package
(includes bottom guard) 542 246
Sound suppression package
(for use w/ripper) 295 134
Tires:
14.00-24, 12 PR, G2 210 95
17.5-25,12 PR, L2 468 213
Toolbox 11 5
Winter door cam for cab 42
Wiper, rear windshield 42
772A MOTOR GRADER DIMENSIONS
-r
10ft.6in.
(3.20m) ,ftT
(2.92m)
19 ft. 7 in. (5.97 m)
27 ft. 9.5 in. (8.47 m)
30 ft. 2 in. (9.20 m) .
32 It. 6 in. (9.90 m)
8 ft. 11 in.
(2.72m)
72

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